../ dmsp_15_ephemeris_20210719.txt 22-Jun-2023 17:03 109580 dmsp_16_ephemeris_20210719.txt 22-Jun-2023 17:03 109586 dmsp_17_ephemeris_20210719.txt 22-Jun-2023 17:03 109571 dmsp_18_ephemeris_20210719.txt 22-Jun-2023 17:03 109534